尘埃粒子在等离子体磁鞘中的运动  

Dynamics of Dust Particles in Magnetized Plasma Sheath

作　　者：邹滨雁[1] 邹秀[1] 刘惠平[1] 邱明辉[1] 

机构地区：[1]大连交通大学理学院,辽宁大连116028

出　　处：《大连交通大学学报》2016年第5期116-120,共5页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金资助项目(11005015;10605008);辽宁省教育厅科学研究计划资助项目(L2011069)

摘　　要：采用单粒子模型数值研究了尘埃粒子在等离子体磁鞘中的运动.鞘层模型包含热电子、冷离子、中性粒子和尘埃粒子.等离子体磁鞘结构与无外加磁场的鞘层相比较其结构不同,数值模拟工作研究了尘埃粒子在有磁场的等离子体鞘层中的运动特性,讨论了尘埃粒子初始位置、初始速度对尘埃粒子运动状态的影响.模拟结果显示在等离子体磁鞘中,磁场能够调节尘埃粒子与基板间的距离,使尘埃粒子偏移远离基板.Dynamics of dust particles in magnetized plasma sheath is numerical studied by using a single particle model. The sheath system consists of hot electrons, cold ions, neutral particles and dust particles. The structure of the magnetized plasma sheath is different to the plasma sheath without magnetic field. The moving trajectory of the dust particles in the plasma sheath is numerically simulated, and the effects of the original position and the original speed of dust particles on the motion are discussed. The results reveal that the equilibrium position of the dust particles varies with magnetic field. The magnetic field can change the moving direction of the dust particles even make the dust particles leave the sheath.

关 键 词：尘埃粒子 磁场 等离子体鞘层 

分 类 号：O53[理学—等离子体物理]